[R] Bug in nlme under version 2.0.0

[Søren Højsgaard]

Dear all,
Under version 2.0.0, I get the error below when calling summary() on a lme-object, whereas it works under version 1.9.1 (well, it did last week, before I upgraded). Any help on this?
Thx in advance
Søren

> library(nlme)
> mf <- formula(Weight~Cu*(Time+I(Time^2)+I(Time^3)))
> lme1 <- lme(mf, data = dietox, random=~1|Pig)
> summary(lme1)
Linear mixed-effects model fit by REML
 Data: dietox 
       AIC      BIC    logLik
  4748.664 4815.081 -2360.332

Random effects:
 Formula: ~1 | Pig
        (Intercept) Residual
StdDev:    6.360083 3.116751

Fixed effects: Error in as.vector(x, "list") : cannot coerce to vector